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Polarity of coil/distributor

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  • Jeff_H
    replied
    I would certainly not use a regular voltmeter that way! It COULD be done if you have a high voltage probe attachment for it. Not something most people have except TV repairmen or ignition system designers though. Without the probe (basically a voltage reducer) that several thousand volts will fry the meter.

    Jeff in ND

    '53 Champion Hardtop

    Leave a comment:


  • Jeff_H
    replied
    I would certainly not use a regular voltmeter that way! It COULD be done if you have a high voltage probe attachment for it. Not something most people have except TV repairmen or ignition system designers though. Without the probe (basically a voltage reducer) that several thousand volts will fry the meter.

    Jeff in ND

    '53 Champion Hardtop

    Leave a comment:


  • curt
    replied
    quote:Originally posted by curt

    I have never known how to do this check and just found a refrence. Quote from a Chiltons Manual: " Check coil polarity, Connect a voltmeter negative lead to the coil's high tension lead, and the positive lead to ground. ( NOTE: reverse the hook up for a positive ground car ). Crank engine Momentarily. If volt meter reads up scale, the polarity is correct. If the volt meter reads down sacle, reverse the leads. ( switch the primary leads).

    Leave a comment:


  • curt
    replied
    quote:Originally posted by curt

    I have never known how to do this check and just found a refrence. Quote from a Chiltons Manual: " Check coil polarity, Connect a voltmeter negative lead to the coil's high tension lead, and the positive lead to ground. ( NOTE: reverse the hook up for a positive ground car ). Crank engine Momentarily. If volt meter reads up scale, the polarity is correct. If the volt meter reads down sacle, reverse the leads. ( switch the primary leads).

    Leave a comment:


  • curt
    replied
    I have tried to make a change in my quote from Chiltons Manual. The quote is as written in the manual BUT , do not crank the engine,, Do Not crank the engine. Better yet forget the entire Quote, I think Chilton make a mistake .. I did loose a volt meter.

    Leave a comment:


  • curt
    replied
    I have tried to make a change in my quote from Chiltons Manual. The quote is as written in the manual BUT , do not crank the engine,, Do Not crank the engine. Better yet forget the entire Quote, I think Chilton make a mistake .. I did loose a volt meter.

    Leave a comment:


  • N8N
    replied
    Sometimes the two methods end up being the same thing

    nate

    (OW! wait till I tell you to hit the key!)

    --
    55 Commander Starlight
    http://members.cox.net/njnagel

    Leave a comment:


  • N8N
    replied
    Sometimes the two methods end up being the same thing

    nate

    (OW! wait till I tell you to hit the key!)

    --
    55 Commander Starlight
    http://members.cox.net/njnagel

    Leave a comment:


  • DEEPNHOCK
    replied
    Man-o-man...
    That's way better than my method.
    Grab the wire.
    If it shocks the crap out of you, it's wired right.
    If not, reverse the wires and test again.[B)]
    Jeff[8D]


    quote:Originally posted by N8N

    You can check it using a pencil as well, if you hold the tip of a lead pencil between a spark plug wire and the terminal that it would normally connect to and then crank the engine you should see the spark "flare" on the spark plug side of the pencil. If it goes toward the wire, coil polarity is reversed.
    nate

    Leave a comment:


  • DEEPNHOCK
    replied
    Man-o-man...
    That's way better than my method.
    Grab the wire.
    If it shocks the crap out of you, it's wired right.
    If not, reverse the wires and test again.[B)]
    Jeff[8D]


    quote:Originally posted by N8N

    You can check it using a pencil as well, if you hold the tip of a lead pencil between a spark plug wire and the terminal that it would normally connect to and then crank the engine you should see the spark "flare" on the spark plug side of the pencil. If it goes toward the wire, coil polarity is reversed.
    nate

    Leave a comment:


  • N8N
    replied
    You can check it using a pencil as well, if you hold the tip of a lead pencil between a spark plug wire and the terminal that it would normally connect to and then crank the engine you should see the spark "flare" on the spark plug side of the pencil. If it goes toward the wire, coil polarity is reversed.

    HTH

    nate

    --
    55 Commander Starlight
    http://members.cox.net/njnagel

    Leave a comment:


  • N8N
    replied
    You can check it using a pencil as well, if you hold the tip of a lead pencil between a spark plug wire and the terminal that it would normally connect to and then crank the engine you should see the spark "flare" on the spark plug side of the pencil. If it goes toward the wire, coil polarity is reversed.

    HTH

    nate

    --
    55 Commander Starlight
    http://members.cox.net/njnagel

    Leave a comment:


  • StudeRich
    replied
    If you use the ignition switch to crank the engine and the primary leads are connected to the coil, I would think you'd be putting 25-30,000 volts through the 12V meter blowing it up! I think it would be easier to just look at the + and - marks on the coil and call it good, if you want to know it's polarity!

    StudeRich
    Studebakers Northwest
    Ferndale, WA

    Leave a comment:


  • StudeRich
    replied
    If you use the ignition switch to crank the engine and the primary leads are connected to the coil, I would think you'd be putting 25-30,000 volts through the 12V meter blowing it up! I think it would be easier to just look at the + and - marks on the coil and call it good, if you want to know it's polarity!

    StudeRich
    Studebakers Northwest
    Ferndale, WA

    Leave a comment:


  • curt
    started a topic Polarity of coil/distributor

    Polarity of coil/distributor

    I have never known how to do this check and just found a refrence. Quote from a Chiltons Manual: " Check coil polarity, Connect a voltmeter negative lead to the coil's high tension lead, and the positive lead to ground. ( NOTE: reverse the hook up for a positive ground car ). Crank engine Momentarily. If volt meter reads up scale, the polarity is correct. If the volt meter reads down sacle, reverse the leads. ( switch the primary leads).
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